Introduction

Are you driving your Subaru and suddenly notice that the AT oil temp light starts flashing? This can be a cause for concern, but understanding the meaning behind this issue and knowing how to fix it can help you address the problem promptly. In this article, we will discuss the possible causes of the Subaru AT oil temp light flashing, its meaning, and the steps you can take to fix it.

What is the Meaning of the Subaru AT Oil Temp Light?

The AT oil temp light in a Subaru stands for Automatic Transmission Oil Temperature Control System. This system is designed to display a warning light when there is a problem with the automatic transmission or if it is not functioning properly. The light serves as an indicator to alert you of potential issues that need to be addressed.

Possible Causes of Subaru AT Oil Temp Light Flashing

  • Overheating: One of the most common causes of the AT oil temp light flashing in a Subaru is overheating. The average maximum transmission temperature for Subaru vehicles is 200 degrees. When the temperature surpasses this limit, it triggers the warning light, indicating that the fluid temperature of the automatic transmission is too hot.
  • Fluid level: Another possible cause could be a low transmission fluid level. Insufficient fluid can lead to increased temperature and cause the AT oil temp light to flash.
  • Faulty transmission control system: If the AT oil temp light flashes immediately after the engine starts, it may indicate a problem with the automatic transmission control system. In such cases, it is recommended to contact your nearest Subaru dealer for service.

What to Do When the AT Oil Temp Light Flashes While Driving

If the AT oil temp light starts flashing while you are driving, it is crucial to take immediate action to prevent further damage to your vehicle. Follow these steps:

  1. Safely pull over: As soon as the light starts flashing, find a safe place to pull over and stop the car.
  2. Allow the engine to cool: Once parked, allow the engine to cool down by idling or turning it off. This will help lower the temperature of the transmission fluid.
  3. Check fluid levels: While the engine is cooling, you can check the transmission fluid level. If it is low, consider adding transmission fluid gradually to bring it to the proper level.
  4. Visit a mechanic if necessary: If the AT oil temp light continues to flash even after the engine has cooled down, it is recommended to take your Subaru to a mechanic for professional servicing.

Steps to Fix the AT Oil Temp Light Flashing in Subaru Impreza

If you are experiencing the AT oil temp light flashing in your Subaru Impreza, there are a few steps you can take to address the issue:

  1. Check fluid level: Start by checking the transmission fluid level in your car. If it is low, attempt to add fluid gradually to reach the correct level. Avoid adding too much fluid, as this can lead to further damage.
  2. Change transmission fluid and filter: Consider changing the automatic transmission fluid and filter to see if it solves the flashing light problem. If you are unsure how to do this, you can refer to a video tutorial for guidance.
  3. Consult the owner’s manual: For specific instructions and recommendations regarding your Subaru Impreza’s transmission fluid, consult the owner’s manual. It will provide information on the proper intervals for changing the fluid and any specific requirements for your vehicle.

Importance of Changing Transmission Fluid

Changing the transmission fluid in your car is essential for maintaining its longevity, efficiency, and performance. Just like changing the engine oil, regular transmission fluid changes ensure the smooth operation of your vehicle’s transmission system. Neglecting proper maintenance of the transmission fluid can lead to severe damage and costly repairs.

When to Change Transmission Fluid

Most manufacturers suggest changing the transmission fluid every 30,000 miles or every two years. However, some transmission fluids can last longer, up to 100,000 miles or more. There are certain conditions that may require more frequent fluid changes, such as towing, driving in severe heat or cold, constant stop-and-go traffic, or racing. Consult your owner’s manual for specific instructions based on your Subaru model.

Conclusion

The AT oil temp light flashing in your Subaru can indicate potential issues with the transmission system. Understanding the meaning behind this warning light and knowing how to address it promptly can help prevent further damage to your vehicle. If you notice the AT oil temp light flashing while driving, follow the steps provided to ensure your safety and take appropriate measures to fix the issue. Proper maintenance and regular fluid changes are crucial for keeping your Subaru’s transmission system in optimal condition. By staying proactive and addressing any problems promptly, you can maintain the longevity and reliability of your vehicle.